Tweco CutMaster 35mm 40mm - Manual (Page 33)

CUTMASTER 35mm, 40mm
Manual 0-5118 4T-1 OPERATION
SECTION 4 TORCH:
OPERATION
4T.01 Torch Parts Selection
Depending on the type of operation to be done
determines the torch parts to be used.
Type of operation:
Drag cutting, standoff cutting or gouging
Torch parts:
Shield Cup, Cutting Tip, Electrode and Starter
Cartridge
NOTE
Refer to Section "4T.07 Parts Selection
for SL100 Torch Cutting" and following for
additional information on torch parts.
Change the torch parts for a different operation
as follows:
WARNING
Disconnect primary power at the source
before assembling or disassembling torch
parts, or torch and leads assemblies.
NOTE
The shield cup holds the tip and starter
cartridge in place. Position the torch with
the shield cup facing upward to keep these
parts from falling out when the cup is
removed.
1. Unscrew and remove the shield cup as-
sembly from the torch head.
2. Remove the Electrode by pulling it straight
out of the Torch Head.
A-03510_AB
Electrode
Start Cartridge
Tip
Shield Cup
Torch Head
Torch Parts
(Drag Shield Cap & Shield Cup Body Shown)
3. Install the replacement Electrode by push-
ing it straight into the torch head until it
clicks.
4 . Install the starter cartridge and desired tip
for the operation into the torch head.
5. Hand tighten the shield cup assembly until
it is seated on the torch head. If resistance
is felt when installing the cup, check the
threads before proceeding.
4T.02 Cut Quality
NOTES
Cut quality depends heavily on setup and
parameters such as torch standoff, align-
ment with the workpiece, cutting speed,
gas pressures, and operator ability.
Cut quality requirements differ depending on ap-
plication. For instance, nitride build-up and bevel
angle may be major factors when the surface will
be welded after cutting. Dross - free cutting is
important when finish cut quality is desired to
avoid a secondary cleaning operation. The fol-
lowing cut quality characteristics are illustrated
in the following figure: